The Household Filter (1B or 2B HHF) by Aqua Clara International is a cost-effective water purification system designed for rural and urban families. It utilizes hollow membrane technology to provide up to 300 liters of 99.999% bacteria-free water daily. Constructed with local materials, the filter is durable and requires minimal maintenance. Its compact design makes it suitable for various settings, and it has been successfully implemented in countries like Kenya, Nicaragua, and Puerto Rico.